|
|||||
|
|
| 张北6.2级地震地形变前兆演化特征 | |
| 引用本文： | 车兆宏,谢觉民,张晶,范燕.张北6.2级地震地形变前兆演化特征[J].地震,1999,19(4):315-322. |
| 作者姓名： | 车兆宏 谢觉民 张晶 范燕 |
| 作者单位： | 1. 中国,北京,100039,中国地震局综合观测中心 2. 中国,天津,300180,中国地震局第一地形变监测中心 3. 中国,北京,100036,中国地震局分析预报中心 |
| 摘 要： | 分析了张北６．２ 级地震前后华北地区水准、ＧＰＳ、重力、定点形变、流动形变、地应变观测资料及前兆的演化过程。结果表明，深大构造对背景场起着控制及传递的作用；震中区位于经历了剧烈地壳运动后近年处于相对平静的地区；背景场与前兆异常动态过程的密切配合，是作出正确震情判定的关键；前兆异常在震后的新发展，在震后趋势预测中有重要作用。 |
| 关 键 词： | 地形变 前兆异常 演化特征 张北地震 |
PRECURSORY EVOLUTION CHARACTERISTICS OF GROUND DEFORMATION BEFORE ZHANGBEI MS 6.2 EARTHQUAKE |
|
| Che Zhaohong,Xie Juemin,Zhang Jing,Fan Yan.PRECURSORY EVOLUTION CHARACTERISTICS OF GROUND DEFORMATION BEFORE ZHANGBEI MS 6.2 EARTHQUAKE[J].Earthquake,1999,19(4):315-322. | |
| Authors: | Che Zhaohong Xie Juemin Zhang Jing Fan Yan |
| Abstract: | We have analyzed the evolutional process of precursors, including observational data of leveling, GPS, gravity, deformation at fixed observational sites, mobile geodetic deformation and ground strain before and after the Zhangbei M_S6.1 earthquake. The results indicate that the deep seated major fault plays a controlling and transferring role for the background field, and the epicentral region is situated at the relatively quiet region in recent years, which has experienced violent crustal movement. The closed coordination of background field with dynamic process of precursory anomaly is a key to the correct seismic situation determination. The new development of precursory anomaly after the earthquake is of great significance in postseismic trend prediction. |
| Keywords: | Ground deformation Precursory anomaly Evolution characteristics Zhangbei Earthquake |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |